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Finding the Fourth Proportional to 519,760.20, 779,691.33 and 216,091.62

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Solution

The fourth proportional to 519,760.20, 779,691.33 and 216,091.62 is: 324,158.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,760.20 : 779,691.33 = 216,091.62 : x
  2. Step 2: Convert to fraction form
    519,760.20/779,691.33 = 216,091.62/x
  3. Step 3: Cross multiply
    519,760.20x = 779,691.33 × 216,091.62
  4. Step 4: Simplify right side
    519,760.20x = 168,484,762,599.66
  5. Step 5: Solve for x
    x = 168,484,762,599.66/519,760.20
  6. Step 6: Final answer
    x = 324,158.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.